Oil burner



Feb. 10. 1925. 1,526,065

A. C. HERSTROM OIL BURNER Filed June 1923 INVENTOR Ar/bur Qflersfram W MONEY Patented Feb. 1 .1925.

ARTH R c. HEas'rnoM, or SEATTLE, wasnme'ron.

Application filed June 25, 1923. semi no. 647,427.

To all whom it may concern Be it known that I, ARTHUR State of Vashington, have invented certain new and useful Improvements in 011 Burners, of which the following is a specification.-

1 what is claimed, changes in the precise c1113- bodiment of the invention shown ma made without departing from the spirit of the invention.

o In the accompanying drawing,-

Figure 1 is a. view in vertical longitudinal section of an oil burner embodyi my 1nvention. Fig. 2 is a sectional plan view taken substantially on line 22 of Fig. 1.

Referri to the drawing, the referenlce 80 numeral 5 indicates the wall of a steamboiler furnace, or the like, through which extends a horizontal leadein pipe 6. The end of this pipe exteriorly of the furnace is connected to a T-fitting 7 having connected as to its lateral branches a steam supply pipe 8 and a fuel-oil supply pl' pe 9 which are respectigely provided wit regulating valves 10 an 11.

The steam supply pipe 8 communicates I 4.0 with a nozzle element 12 extending axially tition'l l into two compartments 15 and 16.

The compartment 15 has communication with the outlet end of the pipe 6 and is with an extension afi'orded by a tu tachment 17 of the casing.

18 represents a tube enga ed in an opening provided in the artitlon 14: and ex tends upwardly axia y of the attachment provided ular at- 17 to within a short distance from the closed upper end 19 thereof. The casing compartment 16 above mentioned is of a substan- (ill-Inn- STROM, a citizen of the United States, res1d-' ing at Seattle, in the-county of King, and

tially U-shape in--vertica1 section so as to provide a curved passage with an upwardly directed outlet to which a chambered head 20 is connected.

The chamber within said head is of an elliptical form in horizontal section with the minor axis somewhat contracted to afford inwardly protruding ribs 21 (Fig. 2) and a restricted opening 22 between compartments 23 and 24 of the head. The'comp-ait ment 23 is in axial alignment with the outlet of the curved passage or compartment 16. Orifices in the nature of'horizontal slots 25 are provided in the peripheral wall of the head 20 opposite the opening 22.

The number of orifices 22 .in the head, however, is determined by the size and duty of the burner, a single orifice being suflicient for small installations and three or more for larger burners.

In operation, oil supplied at a pressure of approximately pounds is supplied through pipe '9 into the lead-in pipe 6 whence it is ejected by a stream of high pressure steam emitted from nozzle pipe 12. The oil in being discharged with steam from said lead-in pipe is impinged against the lower end of the tube 18 and the wall of the compartment 15 becomes broken up and partially converted into a vapor. The mixture of va rized oil and steam pass upwardly in t e annular space surrounding the tube 18 and is then conducted through the latter into the curved compartment or passe 16 and thence through the head cham ers 23 and 24 to eventually escape through the burner orifices 25.

In such passage or flow of the fluid fuel, the same is primarily heated by the steam which is supplied through the pipe connection 8 and the nozzle 12.

The temperature of the fuel is progressively increased in its travel through the burner which is exposed to the heat of the furnace.

The course of the steam and fuel through the burner chambers and passages tends to thoroughly mix the' fluids with a complete vaporization of the oil prior to its discharge from the burner orifices. The operation-of the invention will, it is thought, be understood :from the foregoing description.

What I claim, is,

1. An oil burner comprising a casin of a substantially U-shape, apartition provided 110 sion to the other arm of the casing and,

in said casing, a nozzle-head provided for one arm of the casing, a tubular extension to the other arm of the casing and above said partition a tube extending upwardly from said partition concentrically into said extension to afiord communication between the upper portion of the space therein and the casmg space below the partition said tube and extension thus forming an annular passage, a lead-in pipe communicating from one of its ends laterally with the annular space about said vtube in the casing, and steam. and oil supply ipes connected to the other end of the lea -in pipe the steampipe having aterminal end extending into t e lead-in pipe and discharging against the upwardly extending tube adjacent the partition.

2. An oil burner comprising a casing of a substantially U-shape, a artition vided in said casing, a nozzleead provlded for one arm of the casing, a tubular extenabove said partition, a tubeextending upinto said extension to afford communication between the upper portion of the space therein and the casing space-below the partition said tube and extension thus forming an annular passage, a lead-Yin pipe communi-" eating from one of its'ends laterally with the annular space about said tubein the casing, steam and oil supply pipes connected to the other end of the lead-in pipe, and a nozzleipe for said steam supp-1y pipe provided 111' said lead'in pipe the steam pipe lead in pipe and discharging against the upwardly extending-tube adjacent the partition.

PIERRE BARNES, M. G. SUPPLE' having a terminal end extending into the Signed at Seattle, \Vashington, this 4th 

